CN105874640A - Battery cell having improved battery safety by using inert particles - Google Patents
Battery cell having improved battery safety by using inert particles Download PDFInfo
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- CN105874640A CN105874640A CN201580003716.XA CN201580003716A CN105874640A CN 105874640 A CN105874640 A CN 105874640A CN 201580003716 A CN201580003716 A CN 201580003716A CN 105874640 A CN105874640 A CN 105874640A
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- electrode
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- inert particle
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- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/136—Flexibility or foldability
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides a battery cell being flexibly deformable according to the shape of a device on which to mount and having a structure in which an electrode assembly is embedded in a variable cell case while impregnated with an electrolyte, wherein an electrode at the top and/or the bottom of the electrode assembly on the basis of the stacking direction of electrodes is configured such that an electrode composition comprising inert particles is applied on an electrode current collector facing the inside of the cell case and that 10% to 100% of the inert particles are distributed at the surface of the electrode composition, thereby forming a curve on the surface of the electrode composition as seen in a vertical cross section, or that a coating part comprising inert particles is formed on an electrode composition layer facing the inside of the cell case.
Description
Technical field
The present invention relates to there is use inert particle to improve the battery unit of safety.
Background technology
Along with the notable development of information technology (IT), portable information communication miscellaneous fills
Put and popularized.Thus in 21 century, we are marching toward one and can provide
The popular society of high quality information service moves ahead.
Lithium secondary battery is extremely important for realizing this popular society.Specifically, Ke Yichong
The lithium secondary battery of electric discharge has been widely used as the energy of portable radio device.It addition, lithium secondary is electric
Pond also has been used as the energy of electric vehicle and hybrid electric vehicle, and these electric vehicles are with mixed
Close power electric vehicle in order to solve by existing gasoline vehicle and the diesel vehicle using Fossil fuel
The such problem of such as air pollution caused.
It is as noted previously, as and the device of lithium secondary battery can be used varied, so lithium secondary
Battery has realized variation the most so that lithium secondary battery can provide and be suitable to lithium secondary battery and answered
With output and the capacity of device.Additionally, there are the size of reduction lithium secondary battery and the strong of weight
Strong demand.
Based on its shape, lithium secondary battery can be divided into cylindrical battery cells, prismatic battery
Unit and pouch-shaped battery cell.In the lithium secondary battery of these types, the interest of current people
Being mostly focused on pouch-shaped battery cell, described pouch-shaped battery cell can be carried out with high integration
Stacking, and the energy density of per unit weight is higher, and the most described pouch-shaped battery cell also may be used
With low cost manufacture, and it is prone to amendment.
Fig. 1 and 2 is the decomposition that typical case illustrates the general structure of conventional representative pouch-shaped secondary battery
Axonometric chart.
With reference to Fig. 1, pouch-shaped secondary battery 10 comprises stacked electrode assemblie 20 and battery case 40,
Electrode assemblie 20 has multiple electrode tabs 21 and 22 and two contact conductors 30 and 31, institute
State electrode tabs 21 and 22 to highlight from described electrode assemblie, described contact conductor 30 and 31 points
Be not connected to described electrode tabs 21 and 22, stacked electrode assemblie 20 in sealed states by
It is contained in described battery case 40, so that contact conductor 30 and 31 is from battery case 40 part
Ground exposes.
Battery case 40 includes that lower casing 42 and upper casing 43, described lower casing 42 have recessed receiving portion
41, stacked electrode assemblie 20 is positioned in this recessed receiving portion 41, and described upper casing 43 is used for covering
Lid lower casing 42, so that electrode assemblie 20 is sealed in battery case 40.At stacked electricity
Pole assembly 20 is installed in the described state in upper casing 43 and lower casing 42, upper casing 43 and lower casing
42 are connected to each other by thermal weld, with formed upper end sealing part 44, side seals 45 and 46 with
And lower end sealing 47.
As shown in fig. 1, upper casing 43 and lower casing 42 are it is so structured that the component that separates.Another
Aspect, as shown in Figure 2, one end of upper casing 43 can be integrally formed in the correspondence of lower casing 42
End, thus upper casing 43 and lower casing 42 can be connected with each other in articulated manner.
It addition, as shown in figs. 1 and 2, pouch-shaped battery cell is configured to have following structure:
The electrode terminal being made up of electrode tabs and the contact conductor being connected to electrode tabs is formed at
One end of electrode assemblie.It is configured to have alternatively it is also possible to make to manufacture in aforementioned manners
The pouch-shaped battery cell of following structure: electrode terminal is formed at one end and the other end of electrode assemblie
Place.
Meanwhile, Fig. 1 and 2 illustrates the pouch-shaped battery cell with stacked electrode assemblie.Optional
Ground, it is possible to use said method manufacture has the bag-shaped of convoluted or fruit jelly roll electrode assemblie
Battery unit.
As shown in figs. 1 and 2, pouch-shaped battery cell is generally structured as approximation and has rectangle six
The face bodily form.
But, use the device of pouch-shaped battery cell may be configured to have rectangular hexahedron shape
In addition variously-shaped.Described device is even constructed with curved.Such as, intelligence
The side of mobile phone can be bent into more easy to grip, and flexible display device can bend
Or flexing.It is to say, flexible display device can be made with variously-shaped.
But, it is mounted at the battery unit being configured to there is rectangular hexahedron shape or set of cells
In the case of in the device that the device being configured to have above-mentioned bending section maybe can bend, can
Can reduce the space availability ratio in device.In recent years, it has been necessary to battery unit has flexibility,
So that battery unit can be easily mounted in the device with all kinds design.
Therefore, pole needs following technology: while solving problem above, even if battery becomes
Shape, also ensures that the safety of battery.
Summary of the invention
Technical problem
Make the present invention to solve the problems referred to above and other problem to be resolved.
As extensively in-depth study and the result of experiment, this Shen in order to solve the problems referred to above
Please it was found by the inventors that be configured at battery unit: in the electrode stack of electrode assemblie
It is provided with at the top on direction and/or bottom and is applied with comprising the electrode of inert particle and mixes
The electrode of compound or be provided with on outer surface the electrode forming the coating portion comprising inert particle
In the case of, even if when battery unit deforms according to the device with various design,
Also ensure that the safety of battery unit.The present invention is completed based on these discoveries.
Technical scheme
Above and other target can have the battery unit realization of following structure by offer, its
In, utilize inert particle the top electrode on the electrode stack direction of electrode assemblie and/or
The surface of bottom electrode is formed concaveconvex structure, and also can be by inert particle at battery
Shell forms concaveconvex structure so that the surface area of battery case is more than the surface area of each electrode.Cause
This, even if the shape at battery unit deforms according to the device with all kinds design
In the case of, it is also possible to prevent from by mistake being formed wrinkle on battery case.Therefore, it can effectively
Prevent battery unit dielectric breakdown or the metal level that causes because battery case is impaired expose and lead
Cause the electrolyte leakage from battery unit, so that it is guaranteed that the safety of battery unit.
According to an aspect of the present invention, it is provided that a kind of battery unit, described battery unit has electricity
Pole assembly, when described electrode assemblie is by electrolyte-impregnated, described electrode assemblie is pacified
Being contained in variable battery case, described battery unit is configured to: according to being provided with described battery list
The shape of the device of unit, described battery unit can occur flexible deformation, wherein, described electrode
Assembly, the top electrode of being positioned on electrode stack direction and/or bottom electrode its towards
The electrode mixing comprising inert particle it is provided with in the electrode current collector of the inner surface of described battery case
Thing, 10～100% described inert particle be distributed on the surface of described electrode mixture, thus
Surface on the vertical section of described electrode mixture is formed with concaveconvex structure.
Battery case can also have concaveconvex structure, and it is by being included in the top electricity of electrode assemblie
Inert particle in the electrode mixture of pole and/or bottom electrode is formed.
In a particular embodiment, the electrode mixture comprising inert particle can be applied to electrode
On the top electrode of assembly or the electrode current collector of bottom electrode.Alternately, can be by
The electrode mixture comprising inert particle applies the top electrode to electrode assemblie and bottom electricity
Each electrode current collector in extremely, to prevent from being formed wrinkle on battery case, thus, even if
In the case of there is flexible deformation in opposite direction in battery unit, it is also possible to guarantee battery unit
Safety.
The top electrode and the bottom electrode with above-mentioned structure can be made in the following way
Make: electrode slurry is applied to described the top electrode or bottom electrode towards described battery
The electrode current collector of shell, and described electrode slurry is dried, described electrode slurry includes electricity
Pole active material, binding agent and inert particle.
The inert particle being included in electrode slurry needs to be distributed on the surface of electrode mixture,
So that forming concaveconvex structure in the outer surface of electrode.Electrode slurry can have 500～
The viscosity of 40000cps so that inert particle can move to a certain extent in electrode slurry.
In order to make inertia example have the shifting floated on the surface of electrode after applying inert particle
Dynamic property, it is preferable that the proportion of inert particle is less than the overall proportion of electrode slurry.Specifically,
The proportion of inert particle can be the 30～95% of the overall proportion of electrode slurry.
In the case of the viscosity of electrode slurry is less than 500cps, it is difficult to electrode slurry is applied extremely
Electrode current collector, therefore this is the most preferred.On the other hand, the viscosity at electrode slurry is more than 40000
In the case of cps, inert particle is difficult to move in electrode slurry, causes inert particle to be difficult to
Floating on the surface of electrode, therefore this is also and not preferred.
Inert particle proportion less than electrode slurry overall proportion 30% in the case of, lazy
Property particle may float on the surface of electrode slurry, causes adhesive force to reduce, and therefore this is not
Preferably.On the other hand, inert particle proportion more than electrode slurry overall proportion 95%
In the case of, major part inert particle is likely to occur in electrode slurry, causes being difficult at battery case
In be sufficiently formed concaveconvex structure, even and if in battery case formed concaveconvex structure, can not increase
Add battery case surface area, with can be effectively prevented on battery case formation wrinkle, therefore this
The most preferred.
Various method can be used to reduce the proportion of inert particle.Specifically, can suitably select
Select the material constituting inert particle, or the porous granule being formed with hole can serve as each
Inert particle.
In each outermost electrode, major part inert particle can be distributed in electrode mixture
On surface.As it has been described above, 10～100%, especially 50～90% inert particle can be distributed
On the surface of electrode mixture, thus formed in the surface of the vertical section of electrode mixture
Concaveconvex structure.
According to another aspect of the present invention, it is provided that a kind of manufacture has the battery list of above-mentioned structure
The method of unit, described method includes that (a) applies to comprise to electrode current collector first type surface
The electrode slurry of inert particle, and the described electrode slurry comprising inert particle is dried；
And apply the electrode slurry without inert particle to another first type surface of electrode current collector, and
The described electrode slurry without inert particle is dried, thus prepares one or two outermost
Lateral electrode；B () applies without inert particle to the reciprocal first type surface of electrode current collector
Electrode slurry, and the described electrode slurry without inert particle is dried, thus makes
Standby target；(c) described outermost electrode is arranged on electrode assemblie the top and/or
At bottom, thus it is arranged at described the top and the institute of electrode assemblie at described target
State between bottom or be not arranged at described the top of electrode assemblie at described target
And between described bottom with constitute described electrode assemblie state under so that each described outermost
Lateral electrode, the electrode mixture that comprises described inert particle are towards the inner surface of battery case；With
D described electrode assemblie is placed in the receiving part of variable battery case by (), and extrude institute
State battery case, so that described battery case is in close contact with described electrode assemblie.
Described electrode assemblie is only constituted by outermost electrode or by outermost electrode and target.
Specifically, electrode assemblie can be made up of outermost electrode and target.
According to another aspect of the present invention, described battery unit has electrode assemblie, described
Electrode assemblie is by under the state of electrolyte-impregnated, and described electrode assemblie is installed in variable battery case
In, described battery unit is configured to: according to the shape of the device being provided with described battery unit,
Described battery unit can occur flexible deformation, wherein, described electrode assemblie, be positioned at electrode
The top electrode on stacking direction and/or bottom electrode at it towards the interior table of described battery case
The coating portion comprising inert particle it is provided with on the electrode mixture layer in face, thus described battery list
Unit is configured to have such a structure that and (refers to " electrode topmost " at outermost electrode
And/or " bottom electrode ") surface in be formed with concaveconvex structure.
Battery case can also have concaveconvex structure, its by electrode assemblie the top electrode and/
Or the inert particle included in the coating portion formed on the electrode mixture of bottom electrode carrys out shape
Become.
In the particular embodiment, the coating portion comprising inert particle can be formed at electrode assemblie
The top electrode or bottom electrode on.Or, the coating portion comprising inert particle can be with shape
Become on each in the top electrode and bottom electrode of electrode assemblie, to prevent at battery
On shell formed wrinkle, even if thus in the case of battery unit in the opposite direction flexible deformation,
Also ensure that the safety of battery unit.
Mix it addition, the coating portion comprising inert particle can partly or wholly be formed at electrode
In compound layer.Specifically, the coating portion comprising inert particle can be entirely formed in electrode mixing
In nitride layer.It is partially formed at the feelings on electrode mixture layer in the coating portion comprising inert particle
Under condition, electrode assemblie, the region that is formed with the coating portion comprising inert particle limited the most especially
System.Such as, comprising the coating portion of inert particle, can be formed at being likely to be formed of electrode assemblie many
In the bendable portion of individual wrinkle.
The structure in the coating portion comprising inert particle is not particularly limited.Comprise covering of inert particle
Layer portion can have following structure.
In one embodiment, the coating portion comprising inert particle can be to comprise to be dispersed in electrode
The inert particle layer of the inert particle on mixture layer.
In this case, coating portion is only made up of inert particle.Inert particle rule or irregular
Be dispersed on electrode mixture layer so that each outermost electrode, towards battery case
The outer surface of inner surface is formed concaveconvex structure.
At this point it is possible to inert particle is fixed by the binding agent being included in electrode mixture layer
To electrode mixture layer.Or, binding agent can be coated in the table of each inert particle further
On face so that inert particle can be properly secured to electrode mixture layer further.
In another embodiment, the coating portion comprising inert particle can include being formed at electrode
Adhesive phase on mixture layer and dispersion inert particle over the binder layer.
It is to say, adhesive phase can be formed, then inert particle can be dispersed in bonding
In oxidant layer, to form coating portion so that inert particle can be properly secured to electrode mixture
Layer rather than the inert particle being coated with binding agent on it used as described above.
The thickness of adhesive phase can be less than the size of each inert particle.Thickness at adhesive phase
In the case of degree is more than the size of each inert particle, inert particle may immerse or embedment bonding
Oxidant layer, causes obtaining the effect according to the present invention, i.e. by each outermost electrode
Outer surface in formed concaveconvex structure, and in the outer surface of battery case formed concaveconvex structure,
Make the surface area surface area more than each electrode of battery case, thus prevent shape on battery case
Become wrinkle.
The thickness of adhesive phase can be the 10～95% of the size of each inert particle.
Adhesive phase thickness less than each inert particle size 10% in the case of, lazy
Property particle possibly cannot be properly secured to electrode mixture layer, therefore this is the most preferred.The opposing party
Face, adhesive phase thickness more than each inert particle size 95% in the case of, lazy
Property particle may almost imbed adhesive phase, cause being difficult in battery case being formed concaveconvex structure,
Even and if in battery case formed concaveconvex structure, can not increase battery case surface area, with
Allowing to be effectively prevented formation wrinkle on battery case, therefore this is the most preferred.
As it has been described above, in the case of the thickness of adhesive phase is less than the size of each inert particle,
The proportion of inert particle can not be considered, and formed recessed in the outer surface of each outermost electrode
Male structure.
In a further embodiment, the coating portion comprising inert particle can be to comprise inertia grain
Son and the mixture layer of binding agent.
It is to say, can mix and coated inert particle and binding agent are to form coating portion,
Make inert particle can be properly secured to electrode mixture layer rather than used as discussed above
It is coated with the inert particle of binding agent on it or is additionally formed adhesive phase.
Mixture layer can have the thickness of 1～150 micron.
In the case of the thickness of mixture layer is less than 1 micron, minimal amount of binding agent applies extremely
At least one outer surface of electrode assemblie, causes being difficult to inert particle is fixed to electrode assemblie
At least one outer surface, thus this is the most preferred.On the other hand, the thickness at mixture layer is more than
In the case of 150 microns, materials'use excess, thus save not.It addition, comprise inertia grain
The volume in the coating portion of son increases, and causes the overall dimensions of battery unit to increase, thus space effect
Rate reduces, thus this is the most preferred.
It addition, be the mixing comprising inert particle and binding agent in the coating portion comprising inert particle
In the case of nitride layer, inert particle must be positioned on the surface of mixture layer so that each
The outer surface of lateral electrode is formed concaveconvex structure.For this reason that, the proportion of inert particle
The preferably smaller than overall proportion of mixture layer.Specifically, the proportion of inert particle can be mixing
The 30～90% of the overall proportion of nitride layer.
Inert particle proportion less than mixture layer overall proportion 30% in the case of, lazy
Property particle may float on the mixture layer comprising binding agent, causes adhesive force to reduce, therefore this
The most preferred.On the other hand, inert particle proportion more than mixture layer overall proportion 90%
In the case of, major part inert particle may be embedded in the mixture layer comprising binding agent, leads
Cause to be difficult to be sufficiently formed concaveconvex structure, with at battery case in the outer surface of each outermost electrode
Middle formation concaveconvex structure, even and if in battery case, form concaveconvex structure, electricity can not be increased
The surface area of pond shell, to be effectively prevented on battery case formation wrinkle, thus this is the most preferred.
Various method can be used to reduce the proportion of inert particle, as properly selected composition inertia
The method of the material of particle and use are formed with the porous granule in hole as each inert particle
Method.
In the various embodiments in coating portion, constitute the binding agent in coating portion together with inert particle
It is not particularly limited.Constitute together with inert particle coating portion binding agent can with for being formed
The binding agent of electrode is identical.Example as binding agent, it is possible to use polyvinylidene fluoride, poly-
Vinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose,
Polyvinylpyrrolidone, tetrafluoroethene, polyethylene, polypropylene, Ethylene-Propylene-Diene ternary is altogether
Polymers (EPDM), the EPDM of sulfonation, butadiene-styrene rubber, fluorubber, and various copolymer.
According to another aspect of the present invention, it is provided that a kind of manufacture has the battery list of above-mentioned structure
The method of unit, described method includes that (a) applies electrode mixture to electrode current collector, and right
Described electrode mixture is dried, to prepare multiple electrode；B () is from prepared electrode
One or two electrode of middle selection, and at the electrode mixture layer of each selected electrode
The coating portion comprising inert particle is formed on one first type surface；C () is by one or two
Electrode is arranged on the top and/or the bottom of electrode assemblie so that described coating portion is towards battery
The inner surface of shell, thus constitute described electrode assemblie, and at each described electrode mixture layer
A first type surface on be formed described in comprise inert particle coating portion；(d) by described
Electrode assemblie is placed in the receiving part of variable battery case, and extrudes described battery case, from
And described battery case is in close contact with described electrode assemblie.
No matter said structure how, the type of each inert particle is not particularly limited.Specifically
In embodiment, each inert particle can be in organic filler and/or inorganic particulate.Specifically,
Each inert particle can be organic filler.
Organic filler can be such as made up of polymer or silane-based compound.As polymer
Example, it is possible to use PE, PP, PS, PVdF, PTFE, PET, PMMA, and PANdlf.
Example as silane based compound, it is possible to use hexamethyldisiloxane (HMDS), front three
Base chlorosilane (TMSCL), polydimethylsiloxane (PDMS), and dimethyl dichloro silicon
Alkane (DDS).
Organic filler can be selected from SiO2、Al2O3、MgO、TiO2、ZrO2、CaO、Y2O3、
With one or more the mixture in SrO.
As it was previously stated, in the case of each inert particle is inorganic particulate, because inorganic particulate
Proportion more than electrode slurry or the overall proportion of binding agent, the most each inert particle can be
It is formed with the porous granule in hole.
It addition, in a specific embodiment, the shape of each inert particle is not particularly limited,
As long as each inert particle has predetermined.Such as, each inert particle can construct
For spherical, elliposoidal or polyhedron shape.In view of each inert particle shape and apply or
Easiness during dispersing inert particle, each inert particle can have 5～1000 microns, tool
The size on 5～200 microns of body ground.
The electrode active material, binding agent and the conductive agent that are included in electrode mixture are in the present invention
The technical field related to is known, therefore by description is omitted.But, certainly,
All well known materials are included in the kind of the present invention.
Meanwhile, battery case can be by the laminate comprising resin bed and metal level make bag-shaped
Shell so that battery case has flexibility, to be easily mounted at the device with all kinds design
In, and there is the concaveconvex structure as the concaveconvex structure formed in outermost electrode.
Laminate can be aluminum-laminated sheets.Specifically, laminate can have following structure: tool
The external resin layer having high-durability is attached to a first type surface (outer surface) of metal barrier
On, and the resin seal oxidant layer with high heat bonding character is attached to another of metal barrier
Individual first type surface (inner surface).
External resin layer needs that external environment condition is had height endurability.Therefore, external resin layer needs
Have out of intended tensile strength and against weather.For this reason that, external resin layer
Can be by such as polyethylene terephthalate (PET) or the such polymerization of oriented nylon thin film
Resin is made.
Metal barrier prevents such as gas or the such impurity of moisture from entering or letting out except needs have
Outside the function of dew, in addition it is also necessary to there is the function increasing battery case intensity.To this end, metal barrier
Can be made up of such as aluminum.
Resin seal oxidant layer can be made up of vistanex, and described vistanex has high heat
Agent of low hygroscopicity matter needed for the infiltration of bond property (hot glue stick nature) and suppression electrolyte, and
And will not expand or corroded by electrolyte.More specifically, resin seal oxidant layer can be by flowing
Prolong polypropylene (CPP) to make.
In general, the such polyolefin-based resins of such as polypropylene has low adhesion to metal.
For this reason that, further adhesion layer is set between resin seal oxidant layer and metal barrier,
To improve the adhesion between resin seal oxidant layer and metal barrier, and improve stop spy
Property.Adhesion layer can be such as made up of urethane, acrylic (acryl) or thermoplastic elastomer (TPE),
But, the material of adhesion layer does not limit.
It addition, be installed in variable battery case when electrode assemblie is by electrolyte-impregnated
The structure of electrode assemblie is not particularly limited, as long as multiple electrode tabs is connected to constitute electrode
The positive pole of assembly and negative pole.Electrode assemblie can have such a structure that outermost electrode
Structure be different from other electrode.Specifically, electrode assemblie can be: stacked electrode assemblie,
It is configured to have following structure: be respectively arranged with the shape of separator between a positive electrode and a negative electrode
Under state, described positive pole and negative pole order stack, and each described positive pole and negative pole have predetermined
Size；Stack/folding-typed electrode assembly, it is configured to have following structure: at positive pole and negative
Under the state being respectively arranged with separator between pole, described positive pole and negative pole order stacking, with structure
Double cell or full battery, the most described double cell or full battery is become to utilize isolating membrane to be folded,
Each described positive pole and negative pole have preliminary dimension；Or lamination/stacked electrode assemblie, it is by structure
Make as having following structure: between double cell or full battery, be respectively arranged with the state of separator
Under, described double cell or full battery are stacked.
Double cell can have following stacked structure: the electrode with identical polar is positioned at battery
Two opposite sides.Such as, double cell can be comprise positive pole, separator, negative pole, separator and
The battery of positive pole or comprise the battery of negative pole, separator, positive pole, separator and negative pole.Full electricity
Pond can have following stacked structure: the battery with opposed polarity is positioned at contrary the two of battery
Side.Such as, full battery can be the battery comprising positive pole, separator and negative pole.
As it has been described above, formed on each in the outermost electrode of the inner surface towards battery case
The electrode mixture comprising inert particle according to the present invention or coating portion.Therefore, when electrode group
Part is placed in the receiving portion of variable battery case and extrudes battery case so that battery case and electrode group
When part is in close contact, also formed identical with the concaveconvex structure formed in electrode assemblie in battery case
Concaveconvex structure.As a result, the surface area of battery case is more than the surface area of each electrode.Therefore,
Even if in the shape of battery unit according to the feelings that there is the device of dissimilar design and deform
Under condition, it is also possible to farthest prevent from being not intended to form wrinkle on battery case.
According to other aspects of the invention, it is provided that comprise two or more and there is said structure
The battery module of battery unit and the set of cells comprising battery module.
According to another aspect of the present invention, it is provided that include as set of cells power supply, described
Device.Described device be selected from mobile phone, portable computer, smart phone, panel computer,
Intelligent flat, netbook computer, lightweight electric powered vehicles (LEV), electric vehicle, mixing is dynamic
Power electric vehicle, plug-in hybrid electric vehicle and electrical storage device.
The structure of described device and manufacture method are known in technical field involved in the present invention
, therefore by description is omitted.
Accompanying drawing explanation
According to the description below and accompanying drawing, the above and other mesh of the present invention can be more clearly understood that
, feature and further advantage, wherein:
Fig. 1 and 2 is the exploded perspective view illustrating conventional representative pouch-shaped secondary battery；
Fig. 3 is the plane graph illustrating the battery unit according to embodiment of the present invention；
Fig. 4 is the battery unit of the embodiment typically illustrating the battery unit according to Fig. 3
The side view of internal structure；
Fig. 5 is the battery list of another embodiment typically illustrating the battery unit according to Fig. 3
The side view of the internal structure of unit；
Fig. 6 is the inside typically illustrating the battery unit according to another embodiment of the present invention
The side view of structure；
Fig. 7 is the inside typically illustrating the battery unit according to another embodiment of the present invention
The side view of structure；With
Fig. 8 is the inside typically illustrating the battery unit according to another embodiment of the present invention
The side view of structure.
Detailed description of the invention
Now, will be described in detail with reference to the accompanying drawings the illustrative embodiments of the present invention.But should
Noting, the scope of the present invention is not limited to illustrated embodiment.
Fig. 3 is the plane graph illustrating the battery unit 100 according to embodiment of the present invention, Fig. 4
For typically illustrating the battery unit 100 of the embodiment of the battery unit 100 according to Fig. 3
The side view of internal structure.
With reference to these accompanying drawings, it is configured to that there is following knot according to the battery unit 100 of the present invention
Structure: electrode assemblie 110 includes positive pole 111, negative pole 112 and is respectively placed in described positive pole 111 and
Separator 113 between described negative pole 112, and utilizing electrolyte to impregnate described electrode group
Under the state of part 110, described electrode assemblie 110 is installed in described bag-shaped shell 120, and
And electrode assemblie 110, the top electrode of being positioned on electrode stack direction and bottom electrode
Be provided with electrode mixture 130, described electrode mixture 130 towards the inner surface of bag-shaped shell 120,
And each described electrode mixture 130 comprises inert particle 131.
As shown in Figure 4, major part inert particle 131 is dispersed in the table of electrode mixture 130
On face.Therefore, when electrode assemblie 110, (it is configured such that the electricity comprising inert particle 131
Pole mixture 130 is towards the inner surface of bag-shaped shell 120) be installed in bag-shaped shell 120 and
And bag-shaped shell 120 is when being pressed as making itself and electrode assemblie 110 be in close contact, at bag-shaped shell 120
Middle formation concaveconvex structure 150, as shown in Figure 3.
Fig. 5 is the electricity of another embodiment typically illustrating the battery unit 100 according to Fig. 3
The side view of the internal structure of pool unit 100 '.
With reference to Fig. 5 and Fig. 3, it is configured to have as follows according to the battery unit 100 ' of the present invention
Structure: electrode assemblie 110 ' includes positive pole 111 ', negative pole 112 ' and is respectively placed in described positive pole 111 '
And the separator 113 ' between described negative pole 112 ', and utilizing electrolyte to impregnate described electricity
Under the state of pole assembly 110 ', described electrode assemblie 110 ' is installed in bag-shaped shell 120 ', and
And electrode assemblie 110 ', the top electrode of being positioned on electrode stack direction and bottom electrode
Its towards the inner surface of bag-shaped shell 120 ' electrode mixture layer (hereinafter referred to as " and outermost electricity
Pole mixture layer ") on be provided with coating portion 130 ', each coating portion 130 ' all comprises inertia grain
Son 131 '.
Each comprise the coating portion 130 ' of inert particle 131 ' and be formed at electrode assemblie 110 '
On lateral electrode mixture layer, thus inert particle 131 ' is dispersed in the outermost of electrode assemblie 110 '
On lateral electrode mixture layer.
Inert particle 131 ' can be by binding agent contained in each outermost electrode mixture layer
It is fixed to outermost electrode mixture layer.Although it is not shown, binding agent (not shown) can
To be coated on the surface of each inert particle 131 ' further, thus at described inert particle 131 '
Being dispersed under the state on outermost electrode mixture layer, inert particle 131 ' can be by further
It is properly secured to outermost electrode mixture layer.
Because inert particle 131 ' is regularly or irregularly dispersed in the outermost of electrode assemblie 110 '
On lateral electrode mixture layer, so shape in the outermost electrode mixture layer of electrode assemblie 110
Become concaveconvex structure.Therefore, in electrode assemblie 110 ' is installed in bag-shaped shell 120 ', then bag
Shape shell 120 is extruded as ' with electrode assemblie 110 ' be in close contact time, in bag-shaped shell 120 formed
Concaveconvex structure 150, as shown in Figure 3.
Fig. 6 corresponding with Fig. 5 and 7 is for typically to illustrate according to other embodiment of the present invention
The side view of battery unit 200 and 300.
With reference first to Fig. 6, identical with the mode shown in Fig. 5, electrode assemblie 210 just includes
Pole 211, negative pole 212 and the separation being respectively placed between described positive pole 211 and described negative pole 212
Part 213.It addition, coating portion 230 is formed at the outermost electrode mixture on electrode stack direction
On layer, each described coating portion comprises inert particle 231.
But, unlike structure shown in Fig. 5, each coating comprising inert particle 231
Portion 230 all includes that adhesive phase 232 and inert particle 231, described adhesive phase 232 are formed at
On a corresponding electrode mixture layer, described inert particle is dispersed on adhesive phase 232.
It is to say, compared with structure shown in Fig. 5, inert particle 231 is not directly dispersing in
On outermost electrode mixture layer, but, adhesive phase 232 is formed at an outermost of correspondence
On lateral electrode mixture layer, then inert particle 231 is dispersed on adhesive phase 232, with shape
Become each coating portion 230, so that inert particle 231 can be properly secured to outermost electricity
Pole mixture layer.
The thickness of adhesive phase 232 is less than the size of inert particle 231.Therefore, no matter inertia
The proportion of particle 231 is how many, and inert particle 231 can be prevented to be immersed in adhesive phase 232
In or be embedded in adhesive phase 232.Therefore, it can shape in the outer surface of outermost electrode
Become concaveconvex structure, thus described concaveconvex structure can also be formed at and be provided with the bag-shaped of electrode assemblie
In the outer surface of shell 220.
Meanwhile, with reference to Fig. 7, identical with mode shown in Fig. 5, electrode assemblie 310 includes positive pole
311, negative pole 312 and the separator that is respectively placed between described positive pole 311 and described negative pole 312
313.It addition, each coating portion 330 comprising inert particle 331 is both formed in electrode stack side
On outermost electrode mixture layer upwards.
But, unlike the structure shown in Fig. 5 and 6, each inert particle 331 that comprises
Coating portion 330 all includes that mixture layer, described mixture layer comprise inert particle 331 and bonding
Agent 332.
It is to say, different from described previously, the most do not use and on it, be coated with the lazy of binding agent
Property particle or be additionally formed adhesive phase, but use following scheme: mixed inert particle 331
It is fixed to be formed each coating portion 330 with binding agent 332, thus inert particle 331 can be by
It is properly secured to an outermost electrode mixture layer of correspondence.
In order at the outer surface of outermost electrode and being provided with outside the bag-shaped shell 320 of electrode assemblie
Forming concaveconvex structure in surface, the proportion of inert particle 331 is less than the proportion of mixture.As a result,
Inert particle 331 is positioned at the surface of mixture layer.
Fig. 8 is the side typically illustrating the battery unit 400 according to another embodiment of the present invention
Face figure.Battery unit shown in Fig. 8 is with the difference of battery unit shown in Fig. 6: each
Coating portion 430 containing inert particle 431 is all partly formed.
With reference to Fig. 8, the phase of battery unit 400 shown in Fig. 7 and battery unit 200 shown in Fig. 5
It is with part: each coating portion 430 containing inert particle 431 includes being formed at correspondence
An outermost electrode mixture layer on adhesive phase 432 and be dispersed in adhesive phase 432
On inert particle 431.But, battery unit shown in battery unit 400 shown in Fig. 7 and Fig. 6
The difference of 200 is: each coating portion 430 of inert particle 431 that comprises is at outermost electricity
The upper part ground, middle part of pole mixture layer is formed.
Certainly, in this case, although not shown, but concaveconvex structure is only being provided with electrode
The bag-shaped shell 420 of assembly, corresponding to each comprising the coating portion 430 of inert particle 431
Region in.
Above with reference to described in accompanying drawing, it is configured to that there is following knot according to the battery unit of the present invention
Structure: utilize inert particle to form concavo-convex knot in the outer surface of the top electrode and bottom electrode
Structure, and described concaveconvex structure is also formed in the outer surface of variable battery case so that battery case
Surface area more than the surface area of each electrode.Therefore, though battery unit shape according to
There is the device of all kinds design and in the case of deforming, it is the most only that concaveconvex structure deforms,
Such that it is able to prevent from by mistake being formed on battery case wrinkle.Therefore, it can be effectively prevented battery
Unit generation dielectric breakdown, or prevent owing to the impaired caused metal level of battery case exposes
Electrolyte is caused to be revealed from battery unit, so that it is guaranteed that the safety of battery unit.
Although disclose the preferred embodiment of the present invention for illustrative purposes, but this area
It should be understood to the one skilled in the art that without departing substantially from such as claim present invention disclosed scope and spirit
In the case of, various amendment can be carried out, add and substitute.
Industrial applicability
From described above it is clear that the battery unit according to the present invention can be according to installation
Having the shape of the device of this battery unit that flexible deformation occurs, described battery unit is configured to:
It is provided with as follows at the top of the inner surface towards battery case and/or bottom of electrode assemblie
Electrode: described electrode has the applying electrode mixture comprising inert particle to electrode current collector,
Or, described electrode has the coating portion comprising inert particle being formed on electrode mixture layer.
Therefore, even if deforming according to the device with various types of design in the shape of battery unit
In the case of, it is also possible to prevent from by mistake being formed wrinkle on battery case.Therefore, it can effectively
Prevent battery unit generation dielectric breakdown, or prevent due to the impaired caused gold of battery case
Belong to layer to expose and cause electrolyte to be revealed from battery unit, so that it is guaranteed that the safety of battery unit.
Claims (33)
1. a battery unit, described battery unit has electrode assemblie, at described electrode assemblie
By under the state of electrolyte-impregnated, described electrode assemblie is installed in variable battery case, described
Battery unit is configured to: according to the shape of the device being provided with described battery unit, described electricity
Pool unit can occur flexible deformation, wherein,
Described electrode assemblie, the top electrode of being positioned on electrode stack direction and/or bottom
Electrode comprises inertia grain at it towards being provided with in the electrode current collector of the inner surface of described battery case
Son electrode mixture, 10～100% described inert particle be distributed in described electrode mixture
On surface, thus it is formed with concaveconvex structure on the surface of the vertical section of described electrode mixture.
Battery unit the most according to claim 1, wherein, described in comprise inert particle
Electrode mixture is applied to described the top electrode and the described bottom electricity of described electrode assemblie
Each described electrode current collector in extremely.
Battery unit the most according to claim 1, wherein, described the top electrode or
Lower end electrode prepares with following method: apply electrode slurry to described the top electrode or
The electrode current collector towards described battery case of lower end electrode, and described electrode slurry is done
Dry, described electrode slurry includes electrode active material, binding agent and inert particle.
Battery unit the most according to claim 3, wherein, the year of described electrode slurry
It is 500～40000cps.
Battery unit the most according to claim 3, wherein, the proportion of described inert particle
For the overall proportion of described electrode slurry 30～95%.
Battery unit the most according to claim 1, wherein, each described inert particle is
It is formed with the porous granule in hole.
Battery unit the most according to claim 1, wherein, 50～the described inertia of 90%
Particle is dispersed on the surface of described electrode mixture, thus vertical at described electrode mixture
Described concaveconvex structure it is formed with on the surface in cross section.
8. a battery unit, described battery unit has electrode assemblie, at described electrode assemblie
By under the state of electrolyte-impregnated, described electrode assemblie is installed in variable battery case, described
Battery unit is configured to: according to the shape of the device being provided with described battery unit, described electricity
Pool unit can occur flexible deformation, wherein,
Described electrode assemblie, the top electrode of being positioned on electrode stack direction and/or bottom
Electrode comprises inertia at it towards being provided with on the electrode mixture layer of the inner surface of described battery case
The coating portion of particle.
Battery unit the most according to claim 8, wherein, described in comprise inert particle
Coating portion is formed in described the top electrode and the described bottom electrode of described electrode assemblie
On each.
Battery unit the most according to claim 8, wherein, described in comprise inert particle
Coating portion be partly or wholly formed on described electrode mixture layer.
11. battery units according to claim 8, wherein, described in comprise inert particle
Coating portion be the inert particle comprising the inert particle being dispersed on described electrode mixture layer
Layer.
12. battery units according to claim 8, wherein, described in comprise inert particle
Coating portion include the adhesive phase being formed on described electrode mixture layer and be dispersed in described viscous
Inert particle in mixture layer.
13. battery units according to claim 12, wherein, the thickness of described adhesive phase
Degree is less than the size of each described inert particle.
14. battery units according to claim 13, wherein, the thickness of described adhesive phase
The 10～95% of the size that degree is each described inert particle.
15. battery units according to claim 8, wherein, described in comprise inert particle
Coating portion be the mixture layer including inert particle and binding agent.
16. battery units according to claim 15, wherein, the thickness of described mixture layer
Degree is 1～150 micron.
17. battery units according to claim 15, wherein, the ratio of described inert particle
Be heavily described coating portion overall proportion 30～90%.
18. battery units according to claim 8, wherein, each described inert particle
For being formed with the porous granule in hole.
19. according to the battery unit described in claim 1 or 8, wherein, and each described inertia
Particle is organic filler and/or inorganic particulate.
20. battery units according to claim 19, wherein, each described inert particle
For organic filler.
21. battery units according to claim 19, wherein, described organic filler is by gathering
Compound or silane-based compound are made.
22. battery units according to claim 19, wherein, described organic filler is choosing
From SiO2、Al2O3、MgO、TiO2、ZrO2、CaO、Y2O3With the one in SrO or two
Plant above mixture.
23. according to the battery unit described in claim 1 or 8, wherein, and each described inertia
The size of particle is 5～1000 microns.
24. according to the battery unit described in claim 1 or 8, wherein, and each described inertia
Particle is configured to spherical, elliposoidal or polyhedron shape.
25. according to the battery unit described in claim 1 or 8, and wherein, described battery case is
The bag-shaped shell being made up of the laminate comprising resin bed and metal level.
26. according to the battery unit described in claim 1 or 8, and wherein, described battery case has
There is the concaveconvex structure formed by described inert particle.
27. battery units according to claim 1, wherein, described electrode assemblie is:
-stacked electrode assemblie, it is configured to have following structure: positive pole and negative pole it
Between be respectively arranged with separator state under, described positive pole and negative pole order stacking, and each
Described positive pole and negative pole have preliminary dimension；
-stack/folding-typed electrode assembly, it is configured to have following structure: at positive pole and negative
Under the state being respectively arranged with separator between pole, described positive pole and negative pole order stacking, with structure
Double cell or full battery, the most described double cell or full battery is become to utilize isolating membrane to be folded,
Each described positive pole and negative pole have preliminary dimension；Or
-lamination/stacked electrode assemblie, it is configured to have following structure: at double cell or
Under the state being respectively arranged with separator between full battery, described double cell or full battery are stacked.
28. 1 kinds of methods manufacturing battery unit according to claim 1, described method
Including:
A () applies the electrode slurry comprising inert particle to electrode current collector first type surface,
And the described electrode slurry comprising inert particle is dried；And to electrode current collector
Another first type surface applies the electrode slurry without inert particle, and to described without inert particle
Electrode slurry be dried, thus prepare one or two outermost electrode；
B () applies the electrode without inert particle to the reciprocal first type surface of electrode current collector
Slurry, and the described electrode slurry without inert particle is dried, thus prepare centre
Electrode；
C described outermost electrode is arranged at the top and/or the bottom of electrode assemblie by (),
Thus described target be arranged at described the top of electrode assemblie and described bottom it
Between or described target be not arranged at electrode assemblie described the top and described under
Between end with constitute described electrode assemblie state under so that each described outermost electrode,
Comprise the electrode mixture inner surface towards battery case of described inert particle；With
D described electrode assemblie is placed in the receiving portion of variable battery case by (), and extrude institute
State battery case, so that described battery case is in close contact with described electrode assemblie.
29. methods according to claim 28, wherein, described electrode assemblie by described
Lateral electrode and described target structure.
30. 1 kinds of methods manufacturing battery unit according to claim 8, described method
Comprise:
A () applies electrode mixture to electrode current collector, and do described electrode mixture
Dry, to prepare multiple electrode；
B () selects one or two electrode from prepared electrode, and each selected
Electrode electrode mixture layer a first type surface on form the coating portion of inert particle of comprising；
(c) one or two electrodes are arranged on electrode assemblie the top and/or under
End so that described coating portion is towards the inner surface of battery case, thus constitutes described electrode assemblie,
And comprise inertia grain described in being formed with on a first type surface of each described electrode mixture layer
The coating portion of son；With
D described electrode assemblie is placed in the receiving portion of variable battery case by (), and extrude institute
State battery case, so that described battery case is in close contact with described electrode assemblie.
31. 1 kinds of set of cells, it includes that two or more are according to described in claim 1 or 8
Battery unit.
32. 1 kinds of devices, it includes as battery power supply, according to claim 31
Group.
33. devices according to claim 32, wherein, described device selected from mobile phone,
Portable computer, smart phone, panel computer, Intelligent flat, net book, light-weight electric
Vehicle (LEV), electric vehicle, hybrid electric vehicle, plug-in hybrid-power electric vehicle
And electrical storage device.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140003860A KR101675985B1 (en) | 2014-01-13 | 2014-01-13 | Battery Cell Comprising Electrode Coated with Inactive Particles |
| KR10-2014-0003860 | 2014-01-13 | ||
| KR10-2014-0042791 | 2014-04-10 | ||
| KR1020140042791A KR101675988B1 (en) | 2014-04-10 | 2014-04-10 | Battery Cell Comprising Electrode Including Inactive Particles |
| PCT/KR2015/000059 WO2015105304A1 (en) | 2014-01-13 | 2015-01-05 | Battery cell having improved battery safety by using inert particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105874640A true CN105874640A (en) | 2016-08-17 |
| CN105874640B CN105874640B (en) | 2018-06-29 |
Family
ID=53524096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580003716.XA Active CN105874640B (en) | 2014-01-13 | 2015-01-05 | With the battery unit that safety is improved using inert particle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10090492B2 (en) |
| EP (1) | EP3076468B1 (en) |
| JP (1) | JP6238390B2 (en) |
| CN (1) | CN105874640B (en) |
| WO (1) | WO2015105304A1 (en) |
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| US11764392B2 (en) | 2018-03-01 | 2023-09-19 | Analog Devices, Inc. | Battery assembly and method of manufacturing the same |
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| EP3076468A4 (en) | 2017-01-18 |
| EP3076468A1 (en) | 2016-10-05 |
| US20160322611A1 (en) | 2016-11-03 |
| EP3076468B1 (en) | 2019-03-06 |
| WO2015105304A1 (en) | 2015-07-16 |
| CN105874640B (en) | 2018-06-29 |
| JP2017501549A (en) | 2017-01-12 |
| JP6238390B2 (en) | 2017-11-29 |
| US10090492B2 (en) | 2018-10-02 |
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